Bolt or nut tightening device



The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee. Any surface ornamentation, logos, written matter, etc form no part of the claimed design.

FIG. 1 is a front elevational view of a bolt or nut tightening device of the present design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a first perspective view thereof, as seen from diagonally left downward of the socket attached side;

FIG. 8 is a second perspective view thereof, as seen from diagonally right downward of the socket attached side;

FIG. 9 is a third perspective view thereof, as seen from diagonally left upward of a handle side;

FIG. 10 is a fourth perspective view thereof, as seen from diagonally right upward of a handle side;

FIG. 11 is a fifth perspective view thereof, with a reaction force receiver and the socket being attached. 

The ornamental design for bolt or nut tightening device, substantially as shown and described. 